Title:
Leak sensing device
Document Type and Number:
Japanese Patent JP6065253
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a leak detection device capable of performing a leak block and a leak display at the same time with a simple and low-cost constitution.SOLUTION: The present leak detection device comprises: a zero-phase current transformer 10 through which an AC electric path passes; an integration operation part 20 for integrating output voltages of the zero-phase current transformer 10; a leak detection part 50 for outputting a leak detection signal indicating that leak is occurring in the AC electric path based on operation results performed by the integration operation part 20; an integration part 91 for integrating the output voltages of the zero-phase current transformer 10; and an operation result output part 92 for outputting according to the operation results performed by the integration part 91. The integration operation part 20 and the leak detection part 50 are included in a leak level detection part 80. The operation result output part 92 and the leak detection part 50 are constituted of one module.
Inventors:
Koichi Yamazoe
Takeshi Tanaka
Masataka Kanda
Akemi Shiokawa
Takeshi Tanaka
Masataka Kanda
Akemi Shiokawa
Application Number:
JP2011064687A
Publication Date:
January 25, 2017
Filing Date:
March 23, 2011
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
G01R31/02; H01H83/02; H02H3/16; H02H3/347
Domestic Patent References:
| JP1094161A | ||||
| JP7296708A | ||||
| JP2003219552A | ||||
| JP200981928A | ||||
| JP2201274A | ||||
| JP201015745A | ||||
| JP619120A |
Attorney, Agent or Firm:
Patent business corporation glory patent office